From 35783c647f74dc1dd2f72221039226ab928e91ba Mon Sep 17 00:00:00 2001
From: YUKI Hiroshi <shimoda@clear-code.com>
Date: Wed, 17 Feb 2016 17:22:57 +0900
Subject: [PATCH] Don't show sound indicator for flat parent tabs

---
 modules/browser.js | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/modules/browser.js b/modules/browser.js
index f4b6bbd5..2881e39a 100644
--- a/modules/browser.js
+++ b/modules/browser.js
@@ -6180,9 +6180,12 @@ TreeStyleTabBrowser.prototype = inherit(TreeStyleTabWindow.prototype, {
 	{
 		var children = this.getChildTabs(aTab);
 
-		var hasSoundPlayingChild = children.some(function(aChild) {
+		var hasSoundPlayingChild = (
+			this.allowSubtreeCollapseExpand &&
+			children.some(function(aChild) {
 				return aChild.getAttribute('soundplaying') == 'true';
-			}, this);
+			}, this)
+		);
 		var reallySoundPlaying = this.getTabValue(aTab, this.kREALLY_SOUND_PLAYING) == 'true';
 		if (hasSoundPlayingChild ||
 			reallySoundPlaying)
@@ -6190,9 +6193,12 @@ TreeStyleTabBrowser.prototype = inherit(TreeStyleTabWindow.prototype, {
 		else
 			aTab.removeAttribute('soundplaying');
 
-		var allChildrenMuted = children.length > 0 && children.every(function(aChild) {
+		var allChildrenMuted = (
+			this.allowSubtreeCollapseExpand &&
+			children.length > 0 && children.every(function(aChild) {
 				return aChild.getAttribute('muted') == 'true';
-			}, this);
+			}, this)
+		);
 		if ((allChildrenMuted && !reallySoundPlaying) ||
 			this.getTabValue(aTab, this.kREALLY_MUTED) == 'true')
 			aTab.setAttribute('muted', true);